Intensity correlation time of a single-mode laser driven by two coloured noises with coloured cross-correlation with direct signal modulation

• 来源期刊: 中国物理（英文版）
• 关键词: intensity correlation time direct modulation signal linear approximation method
• 年，卷（期）: 2005,（4）
• 页码范围: 764-770
• 页数: 7页
• 语种: 英文

摘要

In this paper, the intensity correlation time T is studied for the gain-noise model of a single-mode laser driven by coloured pump noise and coloured quantum noise with coloured cross-correlation with a direct signal modulation.By using the linear approximation method, it is found that when the pump noise is modulated directly by a signal,the effects of the cross-correlation between the pump noise and the quantum noise will disappear. In addition, there exists a maximum (i.e. resonance) in the curve of the intensity correlation time T versus the pump noise self-correlation time τ1. Furthermore, when τ1 ≤τ2, the intensity correlation time T increases monotonically with the increase of D and decreases monotonically with the increase of Q, but when τ1 ＞τ2, the intensity correlation time T increases monotonically with the increase of Q and decreases monotonically with the increase of D.